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djellison
Posted on: Mar 17 2010, 05:15 PM


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Just playing with the 64 ppd for now - but great stuff!!

  Forum: LRO & LCROSS · Post Preview: #157211 · Replies: 99 · Views: 134225

djellison
Posted on: Mar 16 2010, 07:24 AM


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You didn't look very hard. Just two threads below this one, in the very same sub forum, a thread that explicitly mentions those missions in it's subheading.
http://www.unmannedspaceflight.com/index.php?showtopic=6192
  Forum: LRO & LCROSS · Post Preview: #157129 · Replies: 99 · Views: 134225

djellison
Posted on: Mar 15 2010, 04:25 PM


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QUOTE (Phil Stooke @ Mar 15 2010, 01:38 PM) *
and a bit later the properly mosaicked versions were also available.


Yeah - but after 3 years of MARCI, they've not done it, and I doubt they'll do it for this either.
  Forum: LRO & LCROSS · Post Preview: #157084 · Replies: 99 · Views: 134225

djellison
Posted on: Mar 15 2010, 01:13 PM


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That's not strange - that's what they should look like. It's a pushframe camera. Unfortunately, as for MARCI, they appear to be only releasing the raw data.
  Forum: LRO & LCROSS · Post Preview: #157079 · Replies: 99 · Views: 134225

djellison
Posted on: Mar 13 2010, 08:52 PM


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QUOTE (JimOberg @ Mar 13 2010, 08:48 PM) *
I haven't been able to get any more precise planning dates for landing than 'earlier than mid-month'.


Publicly, there are none. There's nothing out there that isn't on the Wiki entry or in this thread.
  Forum: Cometary and Asteroid Missions · Post Preview: #157026 · Replies: 702 · Views: 694438

djellison
Posted on: Mar 13 2010, 06:34 PM


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SOHO, TRACE and STEREO imagery, great though it is - can't fly you through the chronosphere. The CGI - especially for that - was superb.
  Forum: Conferences and Broadcasts · Post Preview: #157020 · Replies: 67 · Views: 53111

djellison
Posted on: Mar 13 2010, 05:01 PM


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Nova may occasionally play some Horizon episodes - but most Nova episodes only make it to Nat Geo channel over here.
  Forum: Conferences and Broadcasts · Post Preview: #157012 · Replies: 67 · Views: 53111

djellison
Posted on: Mar 13 2010, 09:42 AM


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I let the rlproject.com domain go - no point spending Ł/year maintaining it when I didn't use it any more.
  Forum: Forum News · Post Preview: #156995 · Replies: 199 · Views: 445799

djellison
Posted on: Mar 13 2010, 07:18 AM


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If I didn't know, I'd put Hayabusa Minverva into google.

First hit is the Wiki Entry
"This solar-powered vehicle was designed to take advantage of Itokawa's very low gravity by using an internal flywheel assembly to hop across the surface of the asteroid, relaying images from its cameras to Hayabusa whenever the two spacecraft were in sight of one another"
  Forum: Cometary and Asteroid Missions · Post Preview: #156989 · Replies: 702 · Views: 694438

djellison
Posted on: Mar 12 2010, 11:34 PM


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The recent Horizon? God it was dreadful. Stock petrol-explosion after stock petrol explosion, every time someone said 'Bang'. It spent a very very long time saying very very little. So much abstract fluffy visual FX - it was like a showreal for 12 year old who just discovered Adobe After Effects.

It was crap.
  Forum: Conferences and Broadcasts · Post Preview: #156978 · Replies: 67 · Views: 53111

djellison
Posted on: Mar 12 2010, 09:49 PM


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I wonder if Radar would be able to find Minerva at some point close to a predicted earth flyby, and then with the big dishes on Earth, action some form of communications with it, just to see if it's still going!

Attached - photos from JAXA's stand at IAC in Valencia a few years ago. My left hand for scale smile.gif
  Forum: Cometary and Asteroid Missions · Post Preview: #156973 · Replies: 702 · Views: 694438

djellison
Posted on: Mar 12 2010, 08:52 PM


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That IS a minority opinion, because whilst you're writing a list of things wrong with it and giving up after 10 minutes I can't think of ANYTHING, and I mean ANYTHING wrong with it and I have NEVER seen so many positive opinions of something on the interwebs. Ever.
  Forum: Conferences and Broadcasts · Post Preview: #156967 · Replies: 67 · Views: 53111

djellison
Posted on: Mar 12 2010, 05:58 PM


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I'm trying to think of the various times we've had few, borked, or no images - apart from ODY safe modes, most of the time it's been problems on the ground with scripts, processing etc rather than a problem inboard the spacecraft.
  Forum: Opportunity · Post Preview: #156953 · Replies: 231 · Views: 140109

djellison
Posted on: Mar 12 2010, 04:18 PM


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QUOTE (Louise Sharples @ Mar 12 2010, 04:05 PM) *
Indeed, but the data quality field suggests that '1' could represent DSN issues:


If it were a DSN issue, then we would likely have heard about problems with MRO, MEX and MODY downlink - not just Opportunity.

It would be most strange for a DSN issue to interject occasionally, within the downlink time of the packets from MER UHF passes.

  Forum: Opportunity · Post Preview: #156943 · Replies: 231 · Views: 140109

djellison
Posted on: Mar 12 2010, 12:40 PM


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Then you've read wrong. Whatever the problem was, it was clearly temporary as the most recent down link was fine. The UHF passes are pretty damn reliable, but they're not perfect.

http://an.rsl.wustl.edu/mer/merbrowser/bro...=res&m=MERA

Four CSV's at the bottom of this page are of UHF passes and have a data quality field, you can see many data dropouts within them.
  Forum: Opportunity · Post Preview: #156928 · Replies: 231 · Views: 140109

djellison
Posted on: Mar 12 2010, 09:07 AM


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Shift the orbit to be equal and you might miss some maybe important small-scale features in the North Pole. Which pole is better illuminated during the prime mission, for example?

It's all a compromise about what's possible, what's simple, what's functional and what's beneficial for science.

  Forum: Juno · Post Preview: #156922 · Replies: 597 · Views: 607347

djellison
Posted on: Mar 11 2010, 10:47 PM


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QUOTE (Bill Harris @ Mar 11 2010, 02:44 AM) *
And it's only going to get better...


If it's down to atmospheric opacity, it's almost certain to get worse and better and worse and better..
  Forum: Opportunity · Post Preview: #156889 · Replies: 741 · Views: 457343

djellison
Posted on: Mar 11 2010, 10:33 PM


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A ratty UHF comms pass ( perhaps with the UHF antenna to orbiter line of sight being interrupted by the LGA or PCMA ) and it on'y takes a few dropped packets to corrupt lots of pictures.

Note that the corruption is in lots of images of a wide range of time. They are not all taken today, for example, inferring a problem with transmission or receipt rather than the actual data or the rover itself.
  Forum: Opportunity · Post Preview: #156885 · Replies: 231 · Views: 140109

djellison
Posted on: Mar 11 2010, 06:25 PM


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So it'snot a question about a bucket at all, it's just asking WHY F=MA
  Forum: Telescopic Observations · Post Preview: #156863 · Replies: 49 · Views: 82363

djellison
Posted on: Mar 11 2010, 05:47 PM


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Is it just me, or is this a catastrophically screwed up analogy?

"Fill a bucket with water, grab it by the handle and whirl it in an arc above your head. If you do it right, you will stay dry. A mysterious force seems to glue the water into the upside down bucket. Scientists are still unsure about where this force comes from"

Errr - F=MA and A=V^2 / R

Nothin mysterious about it.
  Forum: Telescopic Observations · Post Preview: #156861 · Replies: 49 · Views: 82363

djellison
Posted on: Mar 11 2010, 08:22 AM


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Do you need a forum guideline to tell you not to use UMSF to break the law?

Really?
  Forum: Conferences and Broadcasts · Post Preview: #156845 · Replies: 67 · Views: 53111

djellison
Posted on: Mar 10 2010, 06:17 PM


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Fingers crossed BBC will release it on Blu Ray so that people overseas can see it how it's meant to be seen.
  Forum: Conferences and Broadcasts · Post Preview: #156792 · Replies: 67 · Views: 53111

djellison
Posted on: Mar 10 2010, 04:41 PM


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QUOTE (walfy @ Mar 10 2010, 10:55 AM) *
I kinda like the noisy image better. Seems the cleaned image has lost a lot of detail.


FWIW - Calibrated images almost always have less noise than the raw JPG's. That 'detail' you're talking about is most likely noise that shouldn't even be there.
  Forum: Opportunity · Post Preview: #156785 · Replies: 741 · Views: 457343

djellison
Posted on: Mar 9 2010, 11:48 PM


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I didn't notice any music at all. Seriously.
  Forum: Conferences and Broadcasts · Post Preview: #156745 · Replies: 67 · Views: 53111

djellison
Posted on: Mar 9 2010, 09:47 AM


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The best publicly available information is both here, the JAXA website, and the Wikipedia page.

Make your own mind up.
  Forum: Cometary and Asteroid Missions · Post Preview: #156715 · Replies: 702 · Views: 694438

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